Mattress Firm Holding Corp (MFRM): 40 North Management Buys More Shares

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Page 3 of 13 – SEC Filing

CUSIP No. 57722W106 Page 3 of 13 Pages
1.

Names of Reporting Persons

40 NORTH LATITUDE MASTER FUND LTD.

2. Check the Appropriate Box if a Member of a Group (See Instructions)
(a)  ¨
(b)  x
3.

SEC Use Only

4.

Source of Funds (See Instructions)

WC; OO

5.

Check Box if Disclosure of Legal Proceedings Is Required Pursuant
to Items 2(d) or 2(e)     ¨

6.

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person
With

7.

Sole Voting Power

0

8.

Shared Voting Power

4,063,983

9.

Sole Dispositive Power

0

10.

Shared Dispositive Power

4,063,983

11.

Aggregate Amount Beneficially Owned by Each Reporting Person

4,063,983

12.

Check Box if the Aggregate Amount in Row (11) Excludes Certain
Shares (See Instructions)   ¨

13.

Percent of Class Represented by Amount in Row (11)

10.9%

14.

Type of Reporting Person (See Instructions)

CO

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